Release 4.11 drivers/pci/hotplug/rpaphp_pci.c
/*
* PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform.
* Copyright (C) 2003 Linda Xie <lxie@us.ibm.com>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Send feedback to <lxie@us.ibm.com>
*
*/
#include <linux/pci.h>
#include <linux/string.h>
#include <asm/pci-bridge.h>
#include <asm/rtas.h>
#include <asm/machdep.h>
#include "../pci.h" /* for pci_add_new_bus */
#include "rpaphp.h"
int rpaphp_get_sensor_state(struct slot *slot, int *state)
{
int rc;
int setlevel;
rc = rtas_get_sensor(DR_ENTITY_SENSE, slot->index, state);
if (rc < 0) {
if (rc == -EFAULT || rc == -EEXIST) {
dbg("%s: slot must be power up to get sensor-state\n",
__func__);
/* some slots have to be powered up
* before get-sensor will succeed.
*/
rc = rtas_set_power_level(slot->power_domain, POWER_ON,
&setlevel);
if (rc < 0) {
dbg("%s: power on slot[%s] failed rc=%d.\n",
__func__, slot->name, rc);
} else {
rc = rtas_get_sensor(DR_ENTITY_SENSE,
slot->index, state);
}
} else if (rc == -ENODEV)
info("%s: slot is unusable\n", __func__);
else
err("%s failed to get sensor state\n", __func__);
}
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linda Xie | 125 | 89.29% | 2 | 40.00% |
| Paul Mackerras | 10 | 7.14% | 1 | 20.00% |
| Harvey Harrison | 4 | 2.86% | 1 | 20.00% |
| Björn Helgaas | 1 | 0.71% | 1 | 20.00% |
| Total | 140 | 100.00% | 5 | 100.00% |
/**
* rpaphp_enable_slot - record slot state, config pci device
* @slot: target &slot
*
* Initialize values in the slot, and the hotplug_slot info
* structures to indicate if there is a pci card plugged into
* the slot. If the slot is not empty, run the pcibios routine
* to get pcibios stuff correctly set up.
*/
int rpaphp_enable_slot(struct slot *slot)
{
int rc, level, state;
struct pci_bus *bus;
struct hotplug_slot_info *info = slot->hotplug_slot->info;
info->adapter_status = NOT_VALID;
slot->state = EMPTY;
/* Find out if the power is turned on for the slot */
rc = rtas_get_power_level(slot->power_domain, &level);
if (rc)
return rc;
info->power_status = level;
/* Figure out if there is an adapter in the slot */
rc = rpaphp_get_sensor_state(slot, &state);
if (rc)
return rc;
bus = pci_find_bus_by_node(slot->dn);
if (!bus) {
err("%s: no pci_bus for dn %s\n", __func__, slot->dn->full_name);
return -EINVAL;
}
info->adapter_status = EMPTY;
slot->bus = bus;
slot->pci_devs = &bus->devices;
/* if there's an adapter in the slot, go add the pci devices */
if (state == PRESENT) {
info->adapter_status = NOT_CONFIGURED;
slot->state = NOT_CONFIGURED;
/* non-empty slot has to have child */
if (!slot->dn->child) {
err("%s: slot[%s]'s device_node doesn't have child for adapter\n",
__func__, slot->name);
return -EINVAL;
}
if (list_empty(&bus->devices))
pci_hp_add_devices(bus);
if (!list_empty(&bus->devices)) {
info->adapter_status = CONFIGURED;
slot->state = CONFIGURED;
}
if (rpaphp_debug) {
struct pci_dev *dev;
dbg("%s: pci_devs of slot[%s]\n", __func__, slot->dn->full_name);
list_for_each_entry(dev, &bus->devices, bus_list)
dbg("\t%s\n", pci_name(dev));
}
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linas Vepstas | 178 | 64.49% | 7 | 36.84% |
| Linda Xie | 59 | 21.38% | 3 | 15.79% |
| John Rose | 31 | 11.23% | 4 | 21.05% |
| Harvey Harrison | 3 | 1.09% | 1 | 5.26% |
| Gavin Shan | 2 | 0.72% | 2 | 10.53% |
| Paul Mackerras | 2 | 0.72% | 1 | 5.26% |
| Kristen Carlson Accardi | 1 | 0.36% | 1 | 5.26% |
| Total | 276 | 100.00% | 19 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linda Xie | 198 | 45.00% | 4 | 16.00% |
| Linas Vepstas | 178 | 40.45% | 7 | 28.00% |
| John Rose | 31 | 7.05% | 4 | 16.00% |
| Paul Mackerras | 12 | 2.73% | 1 | 4.00% |
| Harvey Harrison | 7 | 1.59% | 1 | 4.00% |
| David Gibson | 3 | 0.68% | 1 | 4.00% |
| Tim Schmielau | 3 | 0.68% | 1 | 4.00% |
| Olof Johansson | 3 | 0.68% | 1 | 4.00% |
| Gavin Shan | 2 | 0.45% | 2 | 8.00% |
| Björn Helgaas | 1 | 0.23% | 1 | 4.00% |
| Kristen Carlson Accardi | 1 | 0.23% | 1 | 4.00% |
| Randy Dunlap | 1 | 0.23% | 1 | 4.00% |
| Total | 440 | 100.00% | 25 | 100.00% |
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